Disclosure of Invention
The invention provides an intelligent generator energy recovery control method, which aims to save energy consumption, reduce DOD (direct current) circulation of a storage battery and prolong the service life of the storage battery.
The method comprises the following steps:
electrifying the whole vehicle to obtain SOC information of the storage battery;
Judging the SOC information, and when the SOC information is not lower than 80 percent and the braking or engine shutdown condition of the whole vehicle is met, recovering the energy at the mark position 1; when the SOC information is lower than 80%, the charging voltage of the storage battery is set to be the maximum voltage, and forced charging is carried out;
And when the whole vehicle is in a braking process or the engine is stopped, energy recovery is performed, and the storage battery is charged.
Further, whether the whole vehicle is in a braking process is judged based on the following conditions;
the driver can obtain the braking signal by stepping on the brake pedal, and the energy recovery is performed to charge the storage battery.
It should be further noted that, judging whether the whole vehicle is in the braking process further includes: the vehicle speed is greater than a threshold, the engine speed is greater than idle, and the driver demand torque is less than the threshold.
It should be further noted that, the engine state information is obtained through the CAN message, and it is determined whether the engine running state flag is in the shutdown process.
In the method, when the energy recovery flag is set to 1, the initial battery voltage U 1 is selected according to the maximum voltage.
It should be further noted that, if the energy recovery flag bit is 0, the generator power generation initial voltage U 1 is taken according to the following method:
and selecting SOC information and battery temperature as input according to the characteristics of the storage battery, and selecting the lowest charge voltage allowable value of the storage battery according to the SOC information and the current temperature of the battery according to a charge voltage demand table.
In the method, the charging and discharging current of the storage battery is also read, the final power generation voltage set value U 2 of the generator is adjusted according to the magnitude of the charging and discharging current I, the charging current of the storage battery is set to be positive, and the discharging current of the storage battery is set to be negative, then
If I < -10A, U 2=U1 +0.2V;
If I > +10A, and SOC > is calibrated, U 2=U1, otherwise U 2 remains unchanged;
if I is less than or equal to-10A and less than or equal to 10A, U 2 is unchanged.
The invention also provides an intelligent generator energy recovery control system, which comprises: the system comprises a storage battery, an electric quantity acquisition module and a whole vehicle controller;
the electric quantity acquisition module is used for acquiring the SOC information of the storage battery and the charge and discharge current information of the storage battery after the whole vehicle is electrified;
The whole vehicle controller is used for judging the SOC information, and if the SOC information is not lower than 80%, one of the following two conditions is met, and the energy recovery mark position is 1;
when the engine is in a stop state;
When the whole vehicle is in a braking process.
When the energy recovery flag is set to 1, energy recovery is performed to charge the battery.
The invention also provides a vehicle, which comprises a memory, a controller and a computer program stored on the memory and capable of running on the controller, wherein the controller realizes the steps of the intelligent generator energy recovery control method when executing the program.
From the above technical scheme, the invention has the following advantages:
According to the intelligent generator energy recovery control method, the characteristic that the storage battery cannot be frequently and deeply discharged is fully considered, whether the storage battery is in an energy recovery state is judged according to the intention of a driver and the state of an engine, then the set initial voltage U 1 of the generator is selected, then the set initial voltage U 1 is corrected according to the charge and discharge current condition of the storage battery, and the final set voltage U 2 of the generator is obtained, so that the energy saving requirement in the energy recovery process is met, the condition of deep discharge of the storage battery is avoided, the DOD cycle of the storage battery is reduced, and the service life of the storage battery is prolonged.
The intelligent generator energy recovery control method can adjust generator parameters by means of an engine management system, and requires a regulator to feed back state parameters of the generator parameters so as to optimize the control of the whole vehicle. By controlling the generator, the energy recovery under the braking working condition can be realized, the energy consumption of the generator is reduced, and the purpose of saving oil is realized.
The invention can also collect the SOC information of the storage battery, the temperature information of the storage battery and the charge-discharge current information, is convenient for a driver to review, and effectively improves the service efficiency of the storage battery. The method can also collect and store the related information of the storage battery with high efficiency and process the information, can realize process monitoring based on the state of the storage battery and the running state of the storage battery, and describes the whole using process of the storage battery by using a multidimensional space. The energy efficiency of the storage battery is improved, potential safety hazards of the storage battery are found in time and early warning is carried out, so that the management level of a vehicle is improved, and timeliness and scientificity of monitoring, managing and controlling the whole charging and discharging process of the vehicle are realized.
Detailed Description
The invention provides an intelligent generator energy recovery control method, which aims to solve the problem that the output voltage of a generator is controlled only through an open loop in the prior art, and the closed loop protection condition of a battery is not considered under the condition that the battery cannot be charged and discharged frequently.
The intelligent power generator energy recovery control method provided by the invention has the technology of a hardware level and the technology of a software level. The basic technologies of the intelligent power generator energy recovery control method generally comprise technologies such as a sensor, a special artificial intelligent chip, cloud computing, distributed storage, big data processing technology, an operation/interaction system, electromechanical integration and the like. The intelligent generator energy recovery control method is implemented in conjunction with operating computer program code, which includes, but is not limited to, object oriented programming languages such as Java, smalltalk, C ++, and conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on-board the vehicle by the controller and may be executed as a stand-alone software package. The vehicle may also be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (illustratively connected through the internet using an internet service provider).
The intelligent generator energy recovery control method utilizes the SOC information metering technology, and the storage battery charge and discharge model is established, so that the generator is always a main power source of the whole vehicle in the running process by utilizing the braking state of the whole vehicle, and the service life of the storage battery is prolonged. The problem of the battery closed-loop protection condition under the condition that the battery can not be charged or discharged frequently is solved effectively.
The smart generator energy recovery control method is applied to one or more vehicles, which are a type of vehicles capable of being set or stored in advance, and the controller includes, but is not limited to, a microprocessor, an Application SPECIFIC INTEGRATED Circuit (ASIC), a Programmable gate array (fieldprogrammable GATE ARRAY, FPGA), a digital Processor (DIGITAL SIGNAL Processor, DSP), an embedded device, etc.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 3, a flowchart of a method for controlling energy recovery of a smart generator according to an embodiment is shown, the method includes:
electrifying the whole vehicle to obtain SOC information of the storage battery;
Here, the driver may power up the vehicle by a key or a remote controller to power up the whole vehicle.
After the energization, SOC information of the vehicle battery may be acquired. Here, the acquisition can be performed by a corresponding power acquisition circuit. And then the SOC information is sent to a controller, and the controller is a full vehicle controller. The controller may display the SOC information on a vehicle dashboard.
Judging the SOC information, and if the SOC information is not lower than 80%, meeting one of the following two conditions, namely, the energy recovery mark position 1; when the SOC information is lower than 80%, the charging voltage of the storage battery is set to be the maximum voltage, and forced charging is carried out;
The method comprises the steps that firstly, an engine is in a stopping process, and whether an engine state mark is in the stopping process is judged;
the second condition is that the whole vehicle is in a braking process, and the specific judgment basis is that one of the following two conditions is met, and the whole vehicle is considered to be in the braking process:
the driver steps on the brake pedal;
the vehicle speed is greater than a threshold, the engine speed is greater than idle, and the driver demand torque is less than the threshold.
That is, under the condition that the SOC information of the storage battery satisfies the charging condition, the energy recovery mark of the vehicle is configured to be 1 bit, so that the driver can learn that the energy recovery is currently satisfied, and further, when the driver presses the brake pedal and the vehicle speed is greater than a certain threshold, the engine speed is higher than the idle speed, and the driver demand torque is less than the threshold for energy recovery, so that the generator is always the main power source of the whole vehicle in the driving process, and the service life of the storage battery is prolonged.
In one embodiment of the present invention, a possible embodiment of which will be described below without limitation based on an intelligent generator energy recovery control method.
In this embodiment, the energy recovery flag position 1, the initial power generation voltage is selected according to the maximum voltage;
If the energy recovery flag bit is 0, the initial power generation voltage of the generator is taken according to the following method:
and selecting an SOC and a battery temperature as a charging voltage requirement table according to the characteristics of the storage battery, and selecting a minimum charging voltage allowable value of the storage battery according to the SOC and the current temperature of the battery.
When the energy recovery flag bit is 0, the vehicle may run in an acceleration condition or the like.
The battery may be a lead-acid battery.
In the embodiment of the invention, the initial power generation voltage can be adjusted according to the charge and discharge current of the storage battery to obtain the power generation voltage U 2 of the power generator, and the charge and discharge of the storage battery can be adjusted.
Specifically, the charge and discharge current of the storage battery is read, the final power generation voltage set value of the generator is adjusted according to the charge and discharge current I, and the charge current of the storage battery is set to be positive, and the discharge current of the storage battery is set to be negative.
If I < -10A, U 2=U1 +0.2V.
If I > +10A, and SOC > is calibrated, U 2=U1, otherwise U 2 remains unchanged.
If I is less than or equal to-10A and less than or equal to 10A, U 2 is unchanged.
Therefore, the intelligent generator energy recovery control method fully considers the characteristic that the storage battery cannot be frequently and deeply discharged, judges whether the storage battery is in an energy recovery state according to the intention of a driver and the state of an engine, then selects the set initial voltage U 1 of the generator, corrects U 1 according to the charge and discharge current condition of the storage battery, and obtains the final set voltage U 2 of the generator, thereby not only meeting the energy saving requirement in the energy recovery process, but also avoiding the deep discharge condition of the storage battery, reducing the DOD cycle of the storage battery and prolonging the service life of the storage battery.
The following is an embodiment of an intelligent power generator energy recovery control system provided by the embodiments of the present disclosure, which belongs to the same inventive concept as the intelligent power generator energy recovery control method of the above embodiments, and in details of the embodiment of the intelligent power generator energy recovery control system, reference may be made to the embodiment of the above intelligent power generator energy recovery control method.
The system comprises: the system comprises a storage battery, an electric quantity acquisition module and a whole vehicle controller;
the electric quantity acquisition module is used for acquiring the SOC information of the storage battery and the charge and discharge current information of the storage battery after the whole vehicle is electrified;
The whole vehicle controller is used for judging the SOC information, and when the SOC information is not lower than 80%, the energy recovery mark position 1 is used when the whole vehicle braking or engine shutdown conditions are met; and performing energy recovery and charging the storage battery. When the SOC information is lower than 80%, the charging voltage of the storage battery is set to be the maximum voltage, and forced charging is carried out;
The intelligent generator energy recovery control system fully considers the working state of the storage battery, including SOC information, storage battery temperature information, charge-discharge current information and the like, so that the storage battery works in a shallow charge-discharge state. The protection strategy of the lead-acid storage battery which cannot be frequently and deeply discharged is further considered, so that the generator is always a main power source of the whole vehicle in the driving process, and the service life of the storage battery is prolonged.
The invention can also archive and store the information of the received SOC, the temperature information of the storage battery, the charge and discharge current information and the like.
Configuring an information operation interface on an instrument panel of the vehicle, so that a driver adds related information of the vehicle which is not stored or configured in a system; or the stored information related to the vehicle is modified or deleted.
And the vehicle information is sent to the mobile phone of the driver in real time based on the local area network or the wide area network, and the electric quantity trend graph of the storage battery can be displayed to form a storage battery histogram or graph for the driver.
The controller is also used for tracking and collecting the SOC information of the vehicle, the temperature information of the storage battery and the charge and discharge current information, and realizing information sharing data.
The invention can collect the SOC information of the storage battery, the temperature information of the storage battery and the charge-discharge current information, is convenient for a driver to review, and effectively improves the service efficiency of the storage battery. The method can also collect and store the related information of the storage battery with high efficiency and process the information, can realize process monitoring based on the state of the storage battery and the running state of the storage battery, and describes the whole using process of the storage battery by using a multidimensional space. The energy efficiency of the storage battery is improved, potential safety hazards of the storage battery are found in time and early warning is carried out, so that the management level of a vehicle is improved, and timeliness and scientificity of monitoring, managing and controlling the whole charging and discharging process of the vehicle are realized.
The elements and algorithm steps of the examples described in the embodiments disclosed in the present smart generator energy recovery control system can be implemented in electronic hardware, computer software, or a combination of both, and to clearly illustrate the interchangeability of hardware and software, the components and steps of the examples have been generally described in terms of functionality in the foregoing description. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The flowcharts and block diagrams in the figures of the intelligent power generator energy recovery control system illustrate the architecture, functionality, and operation of possible implementations of devices, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. Two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.